FIGURE 7.
Raman Spectroscopic graphs for the bare and the immersed samples surfaces (1, 4 and 7 days) of (a) as-fired Si3N4, (b) polished Si3N4, (c) PEEK, 600 grit, (d) PEEK, 2000 grit, (e) Ti6Al4V 600 grit and (f) Ti6Al4V 2000 grit
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